Lubricator.



. No. 679,|49. Patented my 23, mm.4

l c. A. Hmm.

LUBHICATO'B.

l (Application Bled May 11, 1801.) (No Model.; 2 Sheets-Sheet l.

/N VENTOH A nom/lys No. s79,|49. Patented July 23, |901. c. A. Hmm

LUBRICATOR.

(Application med May 11, 1901.) (No Model.) 2 Sheets-Sheet 2.

Unirse Gratins Parnrvr (Ernten.

CARL ALBERT HIRTH, OF STUTTGART, GERMANY.

LUBRICATOR.

SEECIFTCATIQN forming' part of Letters Patent NO. 679,149, dated July 23, 1901.

Application filed May 11, 1901. Serial No. 59,723. (No model.)

T0 all whom t may con/cern;

Be it known that I, CARL ALBERT HIRTH, a citizen of the Empire of Germany, residing in Stuttgart, in the Kingdom of lViirtemberg, in the Empire of Germany, have invented certain new and useful Improvements in Lubri caters, of which the following is a specification.

This invention relates tolubricators of that class known as sight-feed7 lubricators, by which the supply of the lubricant can be accurately regulated and after the lubricating device is once adjusted for the required supply of oil readily thrown out of operation or restored to supply the required quantity of oil, according as the engine or other part to be supplied is stopped or started.

The invention consists of a sight-feed lubricator comprising a glass vessel having a contracted neck, a supportingsleeve for the same provided with openings for showing the drops of the passing lubricant, a feed device for the lubricant secured to said sleeve and provided with an adjustable valve-spindle, a cover for the vessel, and a crank attached to the spindle and 4adapted to be coupled with or uncoupled from the cover, so as to turn with the same, or to be released therefrom when the feed device is to be closed, so as to place the lubricating device in or out of action, as will be fully described hereinafter and finally pointed out in the claims.

In the accompanying drawings, Figure l represents a vertical section of my improved lubricator. Figs. 3 and 4 are details of the support-ingsleeve and feed-valve of the lubricator. Figs. 5, 6, and 7 are vertical sections showing different modifications of the crank device for turning the spindle of my improved lubricator; and Figs. 8, 9, and 10 are plan views, respectively, of Figs. 5, 6, and 7.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, o represents a glass vessel, which is open at the top and provided at the lower end with a contracted neck o', that is tightly seated against a shoulder of a sleeve p, which is connected with the steam-cylinder or other part to be lubricated. The sleeve p is provided with openings o, which serve for observing the passage of the oil through the sleeve, so that it actsin the na- Fig. 2 is a plan View of the same..

ture of a sight-feed- The lower end of the neck o' is tightly seated on the shoulder p of the sleeve p by means of an interposed rubber gasket. The interior of the sleeve p is screw-threaded for receiving the lower exteriorly-threaded end of the feed device,which consists of a nozzle below the threaded part, and an enlarged portion q, which is provided with an annular collecting-groove q and inclined channels q2, by which the oil is conducted to the central channel communicating with the nozzle e, as shown clearlyin Fig. l. The enlarged part q has a central upwardly-extending tubular portion 13, which has an interior screw-thread for adjusting the exteriorly-threaded feed-spindle cz,\vhich is made tapering at its lower end, so as to open or close the nozzle e, according as it is raised or lowered in the tubular portion Q3. The enlarged portion q is seated by an intermediate .rnbber or other elastic packing t' on the contracted neck o', so as to prevent the passage of oil from the vessel or cup o to the sleeve p, except through the feed device described. A cylindrical screen c surrounds the enlarged portion q and serves for screening the oil and for preventing any impurities from passing with the same to the cylinder or other part to be lubricated.

The upper end of the glass vessel or cup o is closed by a cover d, which is firmly pressed on the rim of the vessel i; by a helical spring j, which is interposed between the coverd and a crank h, that is iirmly attached to the upper end of the spindle a. The rim of the cover d is titted by an intermediate packing to the rim of the vessel o, so that the cover closes tightly thereon without being prevented from turning on the vessel. The crank h is provided with a handle by which the spindle a can be turned on its axis, so as to open or close the feed-nozzle e', according to the direction in which the crank is turned. The crank is further provided with an opening h', which engages the upper end of a pin o, that is attached to the cover d. The crank 7i is made of a flat spring and moves the cover cl and spindle a With the crank when thelatter engages the pin r, so that when the cover d is turned in the direction of the arrow shown in Fig. 2 the spindle c, is raised in the threaded portion of the tubular portion g3, and thereby the feed-nozzle e opened. The feed-nozzle a is IOO opened more orless by observin g the drops of oil which pass through the openings o of the sleeve c. When the required quantity is passing through the sleeve p, the crank h remains with the cover and spindle in the position to which they are adjusted. The required quantity of lubricant will then be supplied from the vessel c to the cylinderor other part to be lubricated. When the supply of oil is to beinterrupted, the crank Zt is released from the pin r by disengaging the same therefrom and turned back until the lower end of the spindle a closes the feed-nozzle z. The cover CZ remains during the return motion of the spindle a in its position on the vessel r, together with the pin r, which remains in the position in which it is placed by the crank after the spindle has been raised to the proper position after turning with the cover cZ. Whenever the lubricator is to be operated, it is only necessary to return the crank h into engagement with the pin r, in which position the spindle reassumes its previously-adjusted raised position, so that any readjustment of the feedspindle for supplying the proper quantity of oil is dispensed with and its position restored quickly and without loss of time.

The filling of the glassl vessel or cup o is accomplished through an opening u in the cover CZ, which opening is opened or closed by a pivoted disk w, that is turned around the feedspindle CZ and provided with an opening u', corresponding with the openingu in the cover. The disk fw is provided with a knob t for turning the same, so that its opening u can be placed in or out of register with the opening u, either for filling the vessel with the lubricant or closing the cover after this is accomplished.

In place of the crank shown in Fig. 1 various other modified constructions of the connection of the crank with the cover CZ may be used, as shown in Figs. 5 to 7.

In Fig. 5 in place of the spring-crank 71, is used a stiff arm Z, which is pivoted to lugs at the center of the cover and which engages a lug or fork Z', attached to the circumference of the cover. The crank Z abuts against the lug or fork Zl when the same is lowered whenever the cover and spindle are to be turned. When the crank is placed in the position shown in full lines in Fig. 5, the feed-spindle a is in its proper position vin the nozzle ,e for feeding the oil, while when it is placed in the upright position, as shown in dotted lines in Fig. 5, the feed-nozzle is closed by the screwing down of the spindle when the feed device is to be placed out of operation. By the upright position of the crank Z the attendant always knows that the lubricator is not in use and has to be returned into its lower position into engagement with the lug or fork Z', so as to raise the spindle when the steam-cylinder or other part is to be supplied with oil.

In Fig. 6 the crank h is shown as provided with a pin h2, which is riveted thereto and which engages with an opening h3 near the circumference of the cover. In this case the crank h is likewise made of flat steel, so that its pin can be readily placed in or out of engagement with the cover cZ.

Inv Fig. 7 the crank-arm Zt' is provided with an opening and the cover with a pin 7a2, or vice versa. The cover d is provided with a central knob Zt for turning the cover, said knob being shiftable on the spindle a under the pressure of the helical spring f. When the connection between the cover d and knob k is to be interrupted, the knob is raised and then turned, so that the spindle is returned into its closed position in the feed-nozzle, while the crank is returned into engagement with the cover when the lubricator is to be placed in operation.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination, with a glass vesselhaving a contracted neck at its lower end, of a sleeve inserted in said neck and provided with si ghtopenings,a feed device screwed into said sleeve and provided with a feed-nozzle, an adjustable feed-spindle in said feed device, a cover fitted to the rim of said vessel, a crank attached to the upper end of the spindle, and means adapted for coupling the crank with the cover or releasing it therefrom for returning the spindle into closed position in the feed-nozzle, substantially as set forth.

2. The com bination,with a glass vessel having a contracted neck, of a sleeve for supporting said vessel and provided with sight-openings, a feed device supported by said sleeve and provided with a feed-nozzle at its lower end, a larger grooved portion connected by inclined channels with the central channel of the feed device and feed-nozzle, a spindle screwed into the interiorly-threaded tubular extension of the feed device and adapted to open and close the feed-nozzle, and a crank attached to the upper end of the feed-spindle for placing the same in open or closed position, substantially as set forth.

3. The combination, with a glass vessel for the lubricant, and a feed device in the same, f a sleeve provided with sight-openings for the lubricant, a feed-spindle for said feed de- Avice, a cover fitted to the upper end of the glass vessel, a crank attached to the upper end of the feed-spindle, a spring interposed between the crank and cover, and means for coupling the crank with the cover or uncoupling it therefrom when the feed device is to be placed in operative or non-operative position, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

CARL ALBERT HIRTH.

Witnesses:

PAUL ScHRoDnR, W. REICHARDT.

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